Loose-leaf binder



c. 0. TR-USSELL,

V LOOSE LEAFVBINDER. APPLICATION mznjmn al. 1919.

1,369,309. Patented Feb. 22, 1921.

INVENTOR By Aflibrneys, 6mm QMA 1 STATES PATENT OFFICE.

GLARENCE D. TRUSSELL, OF POUGHKEEPSIE, NEW YORK, ASSIGNOR TO TRUSS ELL MANUFACTURING COMPANY, OF POUGHKEEPSIE, NEW YORK, A CORPORATION Specification of Letters Patent.

LOOSE-LEAF BINDER.

Patented Feb. 22, 1921.

Application filed January 31, 1919. Serial 274,887.

To all whom, it mag/concern;

Be it known that I, CLARENCE D. TRUS- SELL, a citizen of the United States of America, residing in Poughkeepsie, in the county of Dutchess and State of New York, have invented certain new and useful Improvements in Loose-Leaf Binders, of which the following is a specification.

This invention relates to temporary binders or those designed for binding together loose leaves in book form. It relates particularly to so-called ring binders, Wherein half rings or hooks are adapted to close together to constitute binding means and to open out to permit the removal ofthe perforated sheets or leaves.

The invention provides improved means for the attachment of the binding elements to the book back. I

In the accompanying drawings,

Figure 1 is a fragmentary view showing the book cover in an incomplete state;

Fig. 2 shows it in a later stage of manufacture; i

.Fig. 3 is a transverse section on the lin 3-3 in Fig. 1, on an enlarged scale;

l is a similar section on the. line 4- 4.- in Fig. 2, including the binding devices;

Fig. 5 is a longitudinal. section on the 7 no 5-5 in Figs. .2 and 4.

In the figures, A designates the book cover, of which B is the back and C C are the sides; D, as a whole, is thel se-leaf binding mechanism, shown completely only in Figs. 4 and 5; E E are the/hooks or half rings of such mechanism, FF are its hook plates carrying such hooks, G is the back late carrying the hook plates, and H is the binding plate attached to the book back, whereby to attach the binding mechanism to the book cover. Alliif these parts may be of the usual or anyknown construction, except in so far as concerns the present invention in the respects hereinafter set forth. Commonly, the binding plate H is fastened to the back B, and, being made of metal, has ears I on its ends, which, when the binding mechanism 1') is applied, are turned inwardly and downwardly, as shown in Figs. 4 and 5, so as to bind or clamp the plate G- at its-oppositeends. The plates J J shown in Fig. 5, are merely finishing plates for covering up the mechanism, particularly at its exposed ends, and form no part of the present invention.

In the construhtion shown, the book cover A is integral oeing made preferably of a single piece 1.1 thickness of leather (or other suitable material) so as to form both the back B and the sides C C. Preferably this single layer of leather is formed with grooves at K K coinciding approximately with the junction of the back and sides, so as to form a weakened line or integral hinge joint; or such grooves may be omitted, as shown in Fig. 4. When a superior finish is desired on the inside of the cover, a thin fabric lining L may be applied by pasting or cementing to the leather cover, or this may be omitted.

Some difficulty has been encountered in the manufacture of rin books of this general character in providing a suitable attachment for the ring-binding mechanism to the book back; and various constructions have been devised for accomplishing this end. According to the present invention, the binding plate H, which is best made as a curved plate of metal, is secured to the back B by means of a strip M of suitable fabric which is united to the back b two rows, of stitchinga a, as heretofore. 0 make such rows of stitching secure, itis necessary that the end portions a (Fig. 1) of the threads shall be securely attached so that the stitching may not pull out. Heretofore this has been done by drawing throu h the threads to the interior and tying t em in knots, which involves the tedious tying of four knots to each cover. Heretofore the side flaps of the fabric M beyond the stitching have extended outwardly and been left loose, or have been confined under a lining layer. According to my present invention, I draw all the terminal threads a! inward, as shown in Fig. 1, preferably fastening them down temporarily"with a dab of paste. Inthen apply a sheet N of gutta percha .(or other slightly fusible cementitious gum, or fabric coated with such cementitious gum) cut to fit accurately between the rows a a of stitchin; and of the length of the binding strip M, and press it into place against the binding strip between the stitching. The two wings or flaps of the binding strip M are then turned inward and folded down upon the strip of gutta 'percha, and by 'ineans of aheated iron or tool of suitable shape, heat is a plied to soften the gutta percha and ren or it slightly plastlc and adhesive whereby it is securely cemented to the back of the, bindingstrip,-.and the flaps of the strip are cemented down upon the gutta percha, and at the same time the end pore tions a of the stitching threads are also se- I cure'ly cemented in. he side flaps of the binding strip M may be out to such width that they meetneatly edge to edge, as shown in Figs. 2 and Lor they may be out to less width, so that they leave a portion of the g'utta Iperohastlip exposed. The binding plate ,is inserted in the pocket formed by stitching on the strip M. These operations being completed, the cover is in the condition shown. in Fig. 2, with the ends of the plate H slightl -y protruding. and its ears I I outturned. The ring structure I) is then apand the ears I I clenched down upon it,

Finally, the ornamental as shown in. Fig. 5. cover plates J 'J sired.

The construction thus described has immay be put in place if deportant practical advantages, making a very neat and strong attachment, and'one whlch minimizes hand labor and reduces expense. Ibis applicable not merely to the one-ply construction. (or. one ply with lining) described, but also-with any construction of 'cover,.-whether'flexible or rigid, or whether made. of one, two, or more plies.

.Theinvention may be modified or varied in certain respects within the scope of the claims Theconstruction for attaching the ring-binding mechanismiadmitsof application with a wide variety of such mechanisms,

parallel lines, and with its outer .in against its inner portion.

many different constructions of which are known in the art.

I claim as my invention 1. A loose-leaf binder comprising a cover and a binding mechanism, having a back plate, and uniting means comprising a bindmg strip fastened to the cover along two 2. A. loose-leaf binder comprising a cover and a blnding mechanlsm, having a back plate, and uniting meanscomprising a bind.

mg strip united to the cover back bytwo parallel rows off stitching, the terminal threads thereof turned inwardly, and with the outer flaps of said strip turned in against metal binding plate confined between the binding strip and book back, and ears thereon adapted to be turned inwardly"'and clenched down to confine the back plate of the binding mechanism, whereby the inturned flaps of the binding strip are confined between said plates.

In witness whereof, I have hereunto signed my name.

CLARENCE D. TRUSSELL.

flaps turned. I i D 

